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SqlHelper.csÔ´´úÂë petshop4.0 sql server helperÀà

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Collections;
using System.Data.SqlClient;
/// <summary>
/// Êý¾Ý¿âµÄͨÓ÷ÃÎÊ´úÂë
/// ´ËÀàΪ³éÏóÀ࣬²»ÔÊÐíʵÀý»¯£¬ÔÚÓ¦ÓÃʱֱ½Óµ÷Óü´¿É
/// </summary>
public abstract class SqlHelper
{
    //»ñÈ¡Êý¾Ý¿âÁ¬½Ó×Ö·û´®£¬ÆäÊôÓÚ¾²Ì¬±äÁ¿ÇÒÖ»¶Á£¬ÏîÄ¿ÖÐËùÓÐÎĵµ¿ÉÒÔÖ±½ÓʹÓ㬵«²»ÄÜÐÞ¸Ä
    public static readonly string ConnectionStringLocalTransaction = ConfigurationManager.ConnectionStrings["pubsConnectionString"].ConnectionString;
    // ¹þÏ£±íÓÃÀ´´æ´¢»º´æµÄ²ÎÊýÐÅÏ¢£¬¹þÏ£±í¿ÉÒÔ´æ´¢ÈÎÒâÀàÐ͵IJÎÊý¡£
    private static Hashtable parmCache = Hashtable.Synchronized(new Hashtable());
    /// <summary>
    ///Ö´ÐÐÒ»¸ö²»ÐèÒª·µ»ØÖµµÄSqlCommandÃüÁͨ¹ýÖ¸¶¨×¨ÓõÄÁ¬½Ó×Ö·û´®¡£
    /// ʹÓòÎÊýÊý×éÐÎʽÌṩ²ÎÊýÁбí
    /// </summary>
    /// <remarks>
    /// ʹÓÃʾÀý£º
    /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
    /// </remarks>
    /// <param name="connectionString">Ò»¸öÓÐЧµÄÊý¾Ý¿âÁ¬½Ó×Ö·û´®</param>
    /// <param name="commandType">SqlCommandÃüÁîÀàÐÍ (´æ´¢¹ý³Ì£¬ T-SQLÓï¾ä£¬ µÈµÈ¡£)</param>
    /// <param name="commandText">´æ´¢¹ý³ÌµÄÃû×Ö»òÕß T-SQL Óï¾ä</param>
    /// <param name="commandParameters">ÒÔÊý×éÐÎʽÌṩSqlCommandÃüÁîÖÐÓõ½µÄ²ÎÊýÁбí</param>
    /// <returns>·µ»ØÒ»¸öÊýÖµ±íʾ´ËSqlCommandÃüÁîÖ´ÐкóÓ°ÏìµÄÐÐÊý</returns>
    public static int ExecuteNonQuery(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
    {
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